Maintenance equipments, tools, manuals and documents are needed to maintain the weapon systems. At the time, a lot of technical materials are maintained and used individually at a various places and organizations. Thus, maintenance engineers can not get the necessary informations quickly and the efficiency of maintenance was low. In this paper, first we analyze the maintenance processes in weapon systems and define the total measure to evaluate the maintenance efficiency of weapon systems. Second, we propose a implementation procedure to integrated maintenance system.